Station Information

Station ID: 680
Latitude: 69.64611
Longitude: 18.95479
Coastline code: 40
Station code: 31
Country: NORWAY
Time span of data: 1952 – 2023
Completeness (%): 98
Date of last update: 18 Jan 2024

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: TRO1, TROM
Nearby Real Time Stations from VLIZ: trom

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Tromso 040/031 RLR(1964) is 12.8m below BM "Trafokiosk"

Documentation added 1995-03-30

Prior to 1978 fcode=C

Documentation added 1995-03-30

Tide gauge network modernised, new equipment installed in 1986

Documentation added 2010-07-19

The Norwegian Mapping Authority has revised their datasets. The Primary benchmark for Tromso is now O6 N21 11.249m above TGZ. RLR for the dataset was re-calculated using 2008 as the RLR year. The revised RLR factor is now 5.551m while RLR (2008) is 16.8m below TGBM O6 N21.

Documentation added 2012-09-05

For information on sea level change along the Norwegian coast see paper "Contributions to sea level variability along the Norwegian coast for 1960-2010" by K. Richter, J.E.O. Nilsen and H. Drange.

Documentation added 2023-03-22

Between July 1961 and May 1986 the stations was situated north of the Tromsø bridge in Hansfjordnesbukta. The tidal amplitude north of the bridge is about 7% higher than south of the bridge, where the tide gauge has been located for the rest of the record, although in several different locations. It is not known whether these higher tidal amplitudes will influence monthly or annual means.

Data Authority

Norwegian Mapping Authority
Hydrographic Service
Po. Box 60
4001 Stavanger